Craniofacial Development Embryonic and Fetal Stages
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Questions and Answers

At which stage of gestation does craniofacial development begin?

  • 3 weeks (correct)
  • 2 weeks
  • 5 weeks
  • 4 weeks
  • Which of the following facial primordia fuse to form the face?

  • Frontal prominence, maxillary prominence, nasal prominence
  • Frontal prominence, lacrimal prominence, mandibular prominence
  • Frontal prominence, maxillary prominence, mandibular prominence
  • Frontonasal prominence, maxillary prominence, mandibular prominence, lateral nasal prominence, frontal prominence (correct)
  • During which week of fetal development does the palate form?

  • Week 8-12
  • Week 12-16 (correct)
  • Week 16-20
  • Week 4-6
  • How many bones make up the face?

    <p>14</p> Signup and view all the answers

    What is the term for the fibrous joints between bones?

    <p>Sutures</p> Signup and view all the answers

    What is the term for the soft spots in the skull that close during childhood?

    <p>Fontanelles</p> Signup and view all the answers

    Study Notes

    Craniofacial Development

    Embryonic Development

    • Craniofacial development begins at 3 weeks gestation
    • Neural crest cells migrate to form facial primordia
    • Five facial primordia fuse to form the face:
      • Frontonasal prominence
      • Maxillary prominence
      • Mandibular prominence
      • Lateral nasal prominence
      • Frontal prominence

    Fetal Development

    • Week 8-12: Facial features begin to take shape
    • Week 12-16: Palate forms, and facial bones begin to ossify
    • Week 16-20: Facial bones continue to grow and develop

    Postnatal Development

    • Infancy: Bones continue to grow and develop
    • Childhood: Facial bones continue to ossify and mature
    • Adolescence: Facial bones reach adult size and shape

    Facial Bone Structure

    Bones of the Face

    • Cranium: Protects the brain
    • Face: Composed of 14 bones
      • Vomer
      • Zygoma
      • Maxilla
      • Lacrimal
      • Palatine
      • Inferior nasal conchae
      • Mandible
      • Nasal bones
      • Frontal bone
      • Ethmoid bone
      • Sphenoid bone

    Bony Landmarks

    • Nasal aperture
    • Orbital cavity
    • Zygomatic arch
    • Mandibular fossa
    • Palatine bone

    Facial Bone Relationships

    • Sutures: Fibrous joints between bones
    • Synchondroses: Cartilaginous joints between bones
    • Fontanelles: Soft spots in the skull that close during childhood

    Craniofacial Development

    Embryonic Development

    • Craniofacial development begins at 3 weeks gestation, with neural crest cells migrating to form facial primordia
    • Five facial primordia fuse to form the face: frontonasal, maxillary, mandibular, lateral nasal, and frontal prominences

    Fetal Development

    • Weeks 8-12: Facial features begin to take shape
    • Weeks 12-16: Palate forms, and facial bones begin to ossify
    • Weeks 16-20: Facial bones continue to grow and develop

    Postnatal Development

    • Infancy: Facial bones continue to grow and develop
    • Childhood: Facial bones continue to ossify and mature
    • Adolescence: Facial bones reach adult size and shape

    Facial Bone Structure

    Bones of the Face

    • 14 bones compose the face, including:
      • Cranium (protects the brain)
      • Vomer
      • Zygoma
      • Maxilla
      • Lacrimal
      • Palatine
      • Inferior nasal conchae
      • Mandible
      • Nasal bones
      • Frontal bone
      • Ethmoid bone
      • Sphenoid bone

    Bony Landmarks

    • Nasal aperture
    • Orbital cavity
    • Zygomatic arch
    • Mandibular fossa
    • Palatine bone

    Facial Bone Relationships

    • Sutures: Fibrous joints between bones
    • Synchondroses: Cartilaginous joints between bones
    • Fontanelles: Soft spots in the skull that close during childhood

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    Description

    This quiz covers the embryonic and fetal stages of craniofacial development, including the formation of facial primordia and the development of facial features.

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